Hi,

I tired ubuntu 14.04 and debian 7.6....both has the same issue...

1. Create VM with one NIC "eth0"...then run once and insert the cloud-init data and make it up...
2. Powerdown the VM.
3. Add extra ip "eth1"...
4. run once and insert the cloud-init data and make it up...
5. VM successfully come up but removed the eth0 and loopback address config from /etc/network/interfaces file....
6. Now from ifconfig it displays only eth1...becasue eth0 and loopback config removed by eth1..

Thanks,
Punit